US1446452A - Drag-saw clamping device - Google Patents

Description

Feb. 27,1923. 1, 46,452.

G. E. CORSON.

. DRAG SAW CLAMPING 'DEVICE.

' FlLED APR. 19. 1920. 2 SHEETSSHEET 1.

Elvwemtm George E. Como)? L m V E D NG flwm P 0M M .6 E m s G A R D Feb. 27, 1923.

2 SHEETS-SHEET 2.

FILED APR-19.1920.

v snwnm Geo/ye 5. Console (Tum Patented 2'7, i923.

4r a sr GEORGE consort, or RATHDRUM, rnarro. i l

v I v 4,446,452

err ores DRAG-SAW cLAMrine DEVICE.

Application filed April 19, 1920. Serial No. 3?4,S47.

foundation or base fora power driven, portable, sawing machine, of the drag saw type. The primary object of the invention is the provision of an attaching device applicable to the fallen timber to be sawed, for supporting the saw and its motor, which device is comparatively simple in construction and operation, light in weight, strong, and durable, and ellicient in performing its required functions.

To this end the invention consists in certain novel combinations and arrangements of parts whereby the attaching device, when applied to a log or fallen timber, supports one end of the platform for the saw machine motor, by its connection with the log or timber, while the other end of the platform is properly supported from the ground.

In the accompanying drawings I have illustrated the physical embodiment of my invention in which the parts are combined and arranged according to the best mode I have-so far devised for the practical application of the principles of my invention.

Figure 1 is a view in side elevation illustrating the subject matter of my invention in operative position and attached. to a log to be sawed, part of the saw and part of the machinery supporting platform being indi- (rated.

Figure 2' is a perspective view of the device, detached.

Figure 3 is a perspective view of a well known type of drag saw, with the clamping device of my invention shown applied thereto in operative position.

The invention is particularly applicable for use in sawing fallen timber or logs as in dicated at L, and a saw of the drag saw type is supported from the platform P, the saw and platform forming parts of a port able sawing machine of well known type for sawing timber in the forests. In actual use,

the platform upon which the saw machinery is supported, as indicated atP, is of V-shape, lying horizontal with the diverging ends of the platform supported from the ground by suitable posts or uprights, while the apex end of the platform is directly supported from the log L, in order that the saw S may be operated or reciprocated by its motor.

lnFigure 3 the position of the saw platform or frame P is reversed, and the legs of this well known type of saw frame or platform are resting on the log'with the apexend of the platform supported from the ground.

For attachingthe platform and support ing it from the log I utilize the device of my invention, which is manually operable through the instrumentality of the lever 1 of suitable dimensions, and provided with a rigid end jaw 2 having a sharpenedchisel edge to engage and enter the log as indicated. The handle end 3 of the lever'is of sufficient length to afford the application of the required manual power in looking or securing the attachment to the log, and the lever is equipped with a hinged jaw or lever arm l: pivoted at 5 to the lever, the chisel edgeb of the j aw being adapted to enter the log opposite to the fixed jaw as seen in Figures 1 and 3. Thus it will be seen that in applying the device to a log, the lever and lever arm are spread to embrace the log, and then by pulling on the lever, to the left in Figures 1 and 3, the two sharpened edges of the jaws are caused to enter the log at opposite sides, thus embedding the jaws in the log as a support for the platform.

The lever and its hooked arm are held in locked position by means of the pawl or dog 7 having a forked end 8 to engage over the lever arm with one of the rack teeth 9 thereon. By means of the pivot pin 10, and selected holes 11 in the lever and 12 in the pawl, the latter may be adjusted to various conditions when, the attachment is locked to different sizes'of logs, thus either shortening or lengthening the reach of the pawl to engage various teeth of the rack on the lever arm. The pawl holds the two members 1 and 4: of the device rigidly and securely in place, and the attachment thus affords a stable support for the platform P as in l igures l and In Figure 1 the platform is suspended at its pointed end from the lever by means ofa pair of links 13, 1.3,

eonnecting the lever and clevis, together with a eepqnding a h iameter- HM 0s. The

nks-13; suc y dj etii e epe iqns. wil

engageme th t e. leepivoted at let to the lever, and similarly "pivoted at 15 to the elevis or attaching irons or straps 16 that are bolted to the platform P. a l

Inasmuch as a slight movement of the supporting platform results in deranging the saw machinery, with the consequent binding or possible breaking of the saw,"it is absolutely essential that the platformbe supported with stability and rigidity'from hegliountt l; 1Q .-t r e"- V hi de ir d result isaccomplished by the utilization oi my device whieh rot only holds the platforlnas a substantial;foundation for the mar .elnnery, butprevents the log. tronr roll ng or otherwise moving, and the naturaltenw -l1 0 d. 01 p t rm r m to pull down on the lever in Figure 1 also assists in; holgilingthe lever audits armin The forked or bif ufeatedends otthe pawl infleonjunetiou h he eve and; ever irm assi t eld.-

ingthese. p r s. alinect nd P e v b e" of lateral shifting, and the two links, 13

the lever. which; they] embrace, hold the minted, end f he p a or frigi ndl eb SWins t p vot pe nt M513. ndi f ou i the jaws 2 and 6 are spread apart or brought together as required.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is l. The combination with the supporting platform. of a lever and pivotal link connection between the platform and lever, said leverhaving a aw adapted to engage a leg as described, a second jaw pivoted on said lever and opposed thereto in its action on the 1 log, and means for; holding, said lever and pivoted jaw member in loolged position,

T e o b n ion. with a r lllill tfil l platform of a lever and a, pivotal. link connection between said lever and platform, a

divergent lever arm pivoted on thedlever; sharpened jaws at the end oi thetleverand lever arm respectively, a pawl; p voted on the lever, rack teeth on the l ever arm tooo;

aetwithsaid pawl and meansfor he p a l uPPQrtQt he P WL,

h om ne-e 1 f ar uab e Sevi le ac l e chm nt wi ha epp fimg-vp et iorm of a straight arm lever; having sharpened hooked, end, a clevis on t li e;plat{ form a pair of links pivotedzto the llever iand to theielevisa'nd located at the si des'o f; the

lever, a lever arm pivoted to the leverflandi formed with raek teeth,a sharpened hoe gend on the lever arm, a pivoted;

the lever adapted to engage the teeth lever arm, and said lever and pa vl pr oegg; CORSQN;

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